Tuyere



(No Model.) 2 Sheets-Sheet 1. F. G. NORDMANN. TUYERE.

Patented June 24, 1890.

fiamma @s (No Model.) l 2 Sheets-Sheet 2.

' F; G. NORDMANN.

TUYERB.

Patented Ju lV \-l fir!! l IH Wwf/AMW ffesf lro UNITED STATES PATENT OFFICE.

FRIEDRICH G. NORDMANN, OF CINCINNATI, OHIO.

TUYERE.

SPECIFICATION forming part of Letters Patent No. 431,005, dated J une 24, 1890. Application tiled March 3, 1890. Serial No. 342.11.08. (No model.)

To'ctll whom it may concern:

Be it known that I, FRIEDRICH G. NORD- MANN, a citizen of the United States, residing at Cincinnati, in the county of HamiltonV and State of Ohio, have invented certain new and useful Improvements in Tuyeres, of which the following is a specification, reference being had to the accompanying drawings, in which- Figure l is a longitudinal section through a tuyere and its supporting-frame embodying my invention. Fig. 2 is a vertical section taken on the line 2 2 of Fig. l, looking toward the right hand in -said figure. Fig. 3 is a central section through the detachable cap shown in position in Fig. l. Fig. 4 is a perspective view of my invention in an operative position, the draft iiue or chimney not being shown.

The body portion of the tuyere consists of an outer shell A, having an enlarged head a, with an inner air-tube B, the latter having the lateral ribs l; cast thereto. This air-tube B preferably tapers on its inner face from the.

rear to its front end portion, as shown, in order to increase the force of the air-blast. This air-tube is preferably cast separate from the outer shell A, and afterward put to place therein and welded or otherwise suitably secured thereto around the rear and front end portions, in order to render the space between said air-tube and the outer shell perfectly water-tight- The lateral ribs h of the airtube fit tightly against the inner face of the shell A, as shown in Fig. 2, thus forming two water-chambers C and C within the tuyere, in which the water circulates, as will be hereinafter set forth.

` The tuyere is supported and rests within a suitable frame-support composed of the vertical plates D and D', the latter being adj usted to the tuyere and secured together by means of the bolts d, passed through the lugs d', cast with said plates, as set forth. The plates D and D are held to place longitudinally by means of the rods D3. The front plates are secured to place in the annular groove d2 around the front portion of the tuyere, as shown in Fig. l. The openings in the rear plates which surround the tuyere are enlarged vertically, as shown at d3 in Fig. l, to permit of the rear portion of the tuyere being elevated or lowered to change the course of the air-draft in the re-pit of the furnace. To one of the rear plates is cast the lug d4, through which the screw-bolt d5 passes, the latter engaging with the screw-thread within the lug a", cast with the outer shell of the tuyere, as shown in Figs. l and 4, in. which position the rear of the tuyere is elevated or lowered by rotating the bolt d5. While the aforedescribed is the preferable construction for elevating or lowering the rear of the tuyere, any suitable means may be employed for accomplishing said object.

To the rear end portion of the air-tube B is attached a flexible tube E, which latter connects with the bellows F, as shown in. Fig. 4;, the latter being supported in any suitable manner. The object in having this flexible tube E is to permit of raising or lowering the rear of the tuyere in the manner before stated without interfering with the stationary bellows.

Leading into the water-chambers C and C are formed the openings e in the outer casing, into which suitable faucets or other connections may be screwed, to which the supply and return pipes G and G are connected, the supply* pipe G leading from the lower portion of the water-tank Il into the chamber C of the tuyere, and the return-pipe G leading from the chamber C back into the water-tank, as shown in Fig. 4. By means of this construction I am enabled to keep up a constant flow of water at all times. As will be seen in Fig. I .the lateral ribs h, which divide the tuyere into two chambers, do not extend entirely through the body portion, sufficient space being leftat the front end to permit of the cool water passing from the lower chamber C up into the upper chamber (C, from where it is forced back. into the tank.

As will be seen, an opening is formed in IOO y the diameter of the opening,) all that is required to adapt my improved tuyere to any desired work is simply to put to place the cap having the desired blast-opening. This feature of having separable caps of the same outer circumference with varying diameters of blast-openings is illustrated in Figs. 1 and 3.

The operation of my improved tuyere is as follows: After having properly secured the tuyere to place in the frame composed of the plates D D', bolts d', and rods D3, the said frame and tuyere are put to place and the brick-work suitably built up over .the front portion of the tuyere, the rear portion of the frame and tuyere being left open. Cool water is introduced into the chamber C through the pipe G, and as the water in the front end of the tuyere becomes heated it is forced back through the action of the heat and up and out at the return-pipe G into the tank, where it is cooled, ready to be used again. The direction of the blast into the fire-pit K is regulated by the bolt or screw d5, which operates in the lug a2 of the tuyere, in order to raise or lower the rear end of the tuyere, as desired.

The advantages of my invention are many and obvious. The means for circulating water through the tuyere and back again into the tank is a very valuable feature, as a very small quantity of water will be required, which is fed to the tuyere automatically after once in operation, the circulation of the Water tending to prolong the life of the tuyere. The separable caps having differing diameters of blast-openings to accommodate the sized lire required is another valuable feature of my invention. The raising or lowering of the rear portion of the tuyere to direct the blast toward the top or bottom of the tire-pit is a valuable feature in regulating` the heat in the lire-pit.

lVhile the several features of myinvention are preferably used in connection with each other, the frame and mechanism for raising or lowering the rear of the tu yere, as well as the liexiblc connection with the bellows, may

be used in connection with a tuyere of a dif- 5o ferent construction from that herein set forth.

What I claim as new, and desire to secure by Letters Patent, is

l. A tuyere having an outer casing A, an inner air-tube B, provided with the lateral ribs b, which latter divides the space between said casing and tube into two water-chambers C and C', and suitable means, as pipes G and G', for conveying water from a tank into said tuyere and back again into the tank, substantially as set forth.

2. The means herein s et forth for supporting a tuyere, the same consisting Aof a framework niade up of plates D D', lugs d', connected to said plates, bolts d, passing through said lugs, and stay-rods D3, as and for the purposes set forth.

3. In combination with a tuyere mounted in a suitable fran1e-support, substantially as' set forth, suitable means for raising'and lowering the rear end of the tuyere, as and for the purposes specified.

et. In combination with a tuyere mounted ina suitable frame-support, substantially as set forth, the rear plates forming said support having an opening surrounding the tuyere, which opening is enlarged vertically, the lug d4, cast with one of said rear plates, lug a2, cast on the outer surface of the tuyere near its rear end portion, and set-screw or bolt d, passing through the lug dA1 and operating in lug a2, as set forth.

5. In combination with a tuyere mounted in a frame-support, the rear end of said tuyere being connected in and to said frame-support in such a manner as that said rear end of the tuyere may be raised or lowered, as set forth, the exible connection E between the airtube and the bellows, as and for the purposes set forth. l

FREIDRICH G. NORDMANN.

Attest:

J. W. WEBER, HERMAN HAERLIN, Jr. 

